lcddrvce.h

#include <lcddrvce.h>

The lcddrvce library is used for interacting with the Sitronix ST7789 LCD controller.

Overview
Library Initialization
API Documentation

Overview 

This library exposes interfaces to send any supported command to the LCD (this excludes read commands, which don’t work reliably on CE hardware).

Communication with the LCD controller is done over an SPI connection; however, the SPI hardware is also used to communicate with the ARM coprocessor on Python models. As such, the SPI hardware is not always set up properly to communicate with the LCD controller, and this library exists to provide a reliable and performant interface to the LCD across calculator models.

For additional information about the LCD controller and its commands, check out the documentation on WikiTI.

Library Initialization 

The lcd_Init and lcd_Cleanup functions provide reference-counted initialization and cleanup of the SPI configuration. That means multiple calls to lcd_Init() are allowed, and the SPI hardware is restored to its original settings only after the same number of calls to lcd_Cleanup(). Since the configuration is set differently than the OS’s default settings for performance reasons, it’s not allowed to power off the calculator without cleaning up the library first. This means if calling certain functions like os_GetKey which can auto-power-down the calculator, either the LCD library should be cleaned up or auto-power-down should be disabled with os_DisableAPD(). When using this library as part of another library’s implementation and performance is not critical, it’s safest to call both lcd_Init() and lcd_Cleanup() each time commands need to be sent. That way, users of the library will be able to cleanup the SPI configuration whenever they need to.

API Documentation 

This is a library for interfacing with the calculator’s LCD panel. It provides the ability to send direct commands over SPI, and convenience functions are provided for common commands.

Author: Brendan “calc84maniac” Fletcher

Defines

LCD_SIZEDCMD(cmd, size)

Converts a command name and size into a literal for use with lcd_SendSizedCommandRaw(), lcd_SendSizedCommandBytes(), or lcd_SendSizedCommandWords().

The LCD_CMD_ prefix is automatically taken care of.

For example, LCD_SIZEDCMD(VSCRDEF, 3) is used to send LCD_CMD_VSCRDEF with 3 parameters.

Parameters

cmd – [in] Command name without LCD_CMD_ prefix
size – [in] Parameters size in bytes or words (max 255)

LCD_PARAM16(param)

Converts a 16-bit parameter to big endian.

This is only needed when storing 16-bit parameters in a structure for use with lcd_SendCommandRaw() or lcd_SendParamsRaw(). Parameters sent using lcd_SendCommandWords() or specific command macros will be converted to big endian automatically.

lcd_SendCommandRaw(cmd, size, params)

Sends a command, given a pointer to its raw parameters.

See also

lcd_SendSizedCommandRaw

Parameters

cmd – [in] Command name without LCD_CMD_ prefix
size – [in] Parameter data size in bytes (maximum 255)
params – [in] Pointer to raw parameter data

Returns

Pointer following raw parameter data

lcd_SendCommandBytes(cmd, size, ...)

Sends a command with an arbitrary number of byte parameters.

See also

lcd_SendSizedCommandBytes

Parameters

cmd – [in] Command name without LCD_CMD_ prefix
size – [in] Number of parameters (maximum 255)
... – [in] One function parameter for each byte parameter

lcd_SendCommandWords(cmd, size, ...)

Sends a command with an arbitrary number of 16-bit word parameters.

The parameters should be passed as their actual values, and are converted to big endian when transferred over SPI.

See also

lcd_SendSizedCommandWords

Parameters

cmd – [in] Command name without LCD_CMD_ prefix
size – [in] Number of parameters (maximum 255)
... – [in] One function parameter for each word parameter

lcd_SetInvertedMode(on)

Enables or disables pixel color inversion.

Parameters

on – [in] Boolean indicating whether to enable inversion

lcd_SetDisplayEnable(on)

Enables or disables image display.

When disabled, displays a blank (white) image, regardless of the contents of LCD RAM.

Parameters

on – [in] Boolean indicating whether image display should be on

lcd_SetSleepMode(on)

Enables or disables Sleep Mode.

Parameters

on – [in] Boolean indicating whether to enable sleep mode

lcd_SetPartialMode(on)

Enables or disables Partial Mode.

This mode restricts image display to only a subset of the scanlines, with the remaining lines showing as white or black.

See also

lcd_SetPartialArea()

See also

lcd_SetPartialControl()

Parameters

on – [in] Boolean indicating whether to enable partial mode

lcd_SetIdleMode(on)

Enables or disables Idle Mode.

When enabled, each color component of every pixel is rounded to 0 or 63, for 8 displayable colors total (Black, White, Red, Green, Blue, Cyan, Magenta, Yellow).

Parameters

on – [in] Boolean indicating whether to enable idle mode

lcd_SetInterlacedMode(on)

Enables or disables screen interlacing.

When enabled, the left side of the frame is displayed on even-indexed vertical scanlines, and the right side of the frame is displayed on odd-indexed vertical scanlines.

See also

lcd_SetGateControl()

Parameters

on – [in] Boolean indicating whether to enable interlacing

lcd_SetScrollArea(TFA, VSA, BFA)

Sets the vertical scroll area definition.

See also

lcd_SetScrollAddress()

Note

The sum of all three parameters should be 320.

Parameters

TFA – [in] Number of lines in top fixed area, between 0 and 320
VSA – [in] Number of lines in vertical scroll area, between 0 and 320
BFA – [in] Number of lines in bottom fixed area, between 0 and 320

lcd_SetScrollAddress(addr)

Sets the vertical scroll start address.

See also

lcd_SetScrollArea()

Note

In typical usage, this address should be in the range [TFA, 320-BFA) so no lines are repeated. Whenever a displayed line address within the vertical scroll area would be at least 320-BFA, it will have (320-BFA)-TFA subtracted from it to cause wrapping within that range.

Parameters

addr – [in] The source line to display at the start of the vertical scroll area

lcd_SetPartialArea(PSL, PEL)

Sets the start and end lines (inclusive) for the displayed area in Partial Mode.

See also

lcd_SetPartialMode()

Note

If the start line is greater than the end line, the displayed area wraps around.

Parameters

PSL – [in] Partial start line, between 0 and 319
PEL – [in] Partial end line, between 0 and 319

lcd_SetPartialControl(param)

Sets Partial Mode settings.

Can be used to set the color of lines outside the partial display area, as well as configure interval scan for those lines.

LCD_PARCTRL_DEFAULT can be used to restore the default settings.

See also

lcd_SetPartialMode()

Parameters

param – [in] A bitwise OR of each field from lcd_parctrl

lcd_SetRamAccessOrder(param)

Sets the RAM access order flags.

These flags are useful for changing the order pixels are copied to the LCD RAM, including copying in column-major order by setting LCD_MV, which can help avoid screen tearing.

LCD_MADCTL_DEFAULT can be used to restore the default settings.

Note

Often, it makes sense to start with LCD_MADCTL_DEFAULT and then XOR any flags that need to be changed.

Parameters

param – [in] A bitwise OR of flags from lcd_madctl

lcd_SetColumnAddress(XS, XE)

Sets the column address range (inclusive) for copying pixels to the LCD RAM.

The valid range depends on whether the configured RAM access order is row major or column major.

See also

lcd_SetRamAccessOrder()

Parameters

XS – [in] Column start address, between 0 and 319/239
XE – [in] Column end address, between 0 and 319/239

lcd_SetRowAddress(YS, YE)

Sets the row address range (inclusive) for copying pixels to the LCD RAM.

The valid range depends on the configured RAM access order is row major or column major.

See also

lcd_SetRamAccessOrder()

Parameters

YS – [in] Row start address, between 0 and 239/319
YE – [in] Row end address, between 0 and 239/319

lcd_StartPixelWrite()

Starts a pixel write operation, resetting the RAM pointer to the start of the column/row address range.

Pixels can be sent as raw parameter data with lcd_SendParamsRaw() until issuing another command. To continue from the next pixel after issuing another command, use lcd_ContinuePixelWrite().

Note

The RAM interface must first be set to SPI with lcd_SetRamInterface() or lcd_SetRamControl().

lcd_ContinuePixelWrite()

Continues a pixel write operation without resetting the RAM pointer.

Pixels can be sent as raw parameter data with lcd_SendParamsRaw() until issuing another command. To continue from the next pixel after issuing another command, this command can be used again.

Note

The RAM interface must first be set to SPI with lcd_SetRamInterface() or lcd_SetRamControl().

lcd_SetPixelFormat(param)

Sets the pixel formats for SPI and RGB interfaces.

LCD_COLMOD_DEFAULT can be used to restore the default settings.

Parameters

param – [in] A bitwise OR of each field from lcd_colmod

lcd_SetRamInterface(param)

Sets the RAM interface and display mode settings.

LCD_RAMCTRL1_DEFAULT can be used to restore the default settings.

Parameters

param – [in] A bitwise OR of each field from lcd_ramctrl1

lcd_SetRamControl(param1, param2)

Sets all RAM control settings.

LCD_RAMCTRL1_DEFAULT and LCD_RAMCTRL2_DEFAULT can be used to restore the default settings.

Parameters

param1 – [in] A bitwise OR of each field from lcd_ramctrl1
param2 – [in] A bitwise OR of each field from lcd_ramctrl2

lcd_SetGateControl(param)

Sets gate control flags.

This overrides any previous setting of lcd_SetInterlacedMode(), and vice versa.

LCD_GATECTRL_DEFAULT can be used to restore the default setting.

Parameters

param – [in] A bitwise OR of flags from lcd_gatectrl

lcd_SetInvertedSettings(param)

Sets inverted settings flags.

These flags invert the effects of various other settings.

LCD_LCMCTRL_DEFAULT can be used to restore the default settings.

Note

Often, it makes sense to start with LCD_LCMCTRL_DEFAULT and then XOR any flags that need to be inverted.

Parameters

param – [in] A bitwise OR of flags from lcd_lcmctrl

lcd_SetNormalFrameRateControl(param)

Sets frame rate control settings for Normal Mode.

LCD_FRCTRL_DEFAULT can be used to restore the default setting.

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

Parameters

param – [in] A bitwise OR of each field from lcd_frctrl

lcd_SetFrameRateDivider(DIV)

Sets the frame rate clock divider and disables separate frame rate control.

To enable separate frame rate control as well, use lcd_EnableDividedSeparateFrameRateControl().

LCD_DIV_DEFAULT can be used to restore the default setting.

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

Parameters

DIV – [in] A clock divider constant from lcd_frctrl1

lcd_EnableSeparateFrameRateControl(idle, partial)

Enables and sets separate frame rate control settings for Idle Mode and Partial Mode.

Also resets the frame rate divider to the default. To set the frame rate divider as well, use lcd_EnableDividedSeparateFrameRateControl().

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

Parameters

idle – [in] A bitwise OR of each field from lcd_frctrl to be used in Idle Mode
partial – [in] A bitwise OR of each field from lcd_frctrl to be used in Partial Mode

lcd_EnableDividedSeparateFrameRateControl(DIV, idle, partial)

Enables and sets separate frame rate control settings for Idle Mode and Partial Mode, with an additional clock divider.

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

Parameters

DIV – [in] A clock divider constant from lcd_frctrl1.
idle – [in] A bitwise OR of each field from lcd_frctrl to be used in Idle Mode
partial – [in] A bitwise OR of each field from lcd_frctrl to be used in Partial Mode

lcd_DisableSeparateFrameRateControl()

Disables separate frame rate control settings for Idle Mode and Partial Mode.

Also resets the frame rate divider to the default. To avoid resetting the divider, use lcd_SetFrameRateDivider() instead.

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

lcd_SetNormalPorchControl(BP, FP)

Sets porch control settings for Normal Mode.

LCD_BP_DEFAULT and LCD_FP_DEFAULT can be used to restore the default settings.

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

Parameters

BPA – [in] Number of lines in back porch, between 1 and 127. Used only with LCD_DM_MCU or LCD_DM_VSYNC
FPA – [in] Number of lines in front porch, between 1 and 127. Used only with LCD_DM_MCU

lcd_SetNormalBackPorchControl(BPA)

Sets only the back porch control setting for Normal Mode.

LCD_BP_DEFAULT can be used to restore the default setting.

Note

This setting is most useful when setting LCD_DM_VSYNC in lcd_SetRamInterface(), because the front porch setting is not used in that mode.

Parameters

BPA – [in] Number of lines in back porch, between 1 and 127. Used only with LCD_DM_MCU or LCD_DM_VSYNC

lcd_EnableSeparatePorchControl(BPA, FPA, BPB, FPB, BPC, FPC)

Enables and sets separate porch control for Idle Mode and Partial Mode.

Requires specifying porch settings for Normal Mode as well.

LCD_BP_DEFAULT and LCD_FP_DEFAULT can be used to specify default settings for any mode.

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

Parameters

BPA – [in] Number of lines in Normal Mode back porch, between 1 and 127
FPA – [in] Number of lines in Normal Mode front porch, between 1 and 127
BPB – [in] Number of lines in Idle Mode back porch, a multiple of 4 between 4 and 60
FPB – [in] Number of lines in Idle Mode front porch, a multiple of 4 between 4 and 60
BPC – [in] Number of lines in Partial Mode back porch, a multiple of 4 between 4 and 60
FPC – [in] Number of lines in Partial Mode front porch, a multiple of 4 between 4 and 60

lcd_DisableSeparatePorchControl(BPA, FPA)

Disables separate porch control for Idle Mode and Partial Mode.

Requires specifying porch settings for Normal Mode, which will then apply to all modes.

LCD_BP_DEFAULT and LCD_FP_DEFAULT can be used to restore the default settings.

Note

This setting only matters the LCD controller is using internal scan timing, that is, when using a setting other than LCD_DM_RGB in lcd_SetRamInterface().

Parameters

BPA – [in] Number of lines in back porch, between 1 and 127
FPA – [in] Number of lines in front porch, between 1 and 127

lcd_SetDigitalGamma(on)

Enables or disables digital gamma.

Digital gamma mappings can be set using lcd_SetDigitalGammaTableRed() and lcd_SetDigitalGammaTableBlue().

Parameters

on – [in] Boolean indicating whether to enable digital gamma

lcd_SetDigitalGammaTableRed(table)

Sets the digital gamma mapping table for the Red component.

Note

With the default BGR settings, this table actually modifies the Blue component’s gamma. Also, due to a hardware quirk, the LSB of the input component is forced to 0 before indexing the table.

Parameters

table – [in] A pointer to a 64-byte table, with the most significant 6 bits of each byte determining the output component value.

lcd_SetDigitalGammaTableBlue(table)

Sets the digital gamma mapping table for the Blue component.

Note

With the default BGR settings, this table actually modifies the Red component’s gamma. Also, due to a hardware quirk, the LSB of the input component is forced to 0 before indexing the table.

Parameters

table – [in] A pointer to a 64-byte table, with the most significant 6 bits of each byte determining the output component value.

LCD_CMD_NOP: No operation.

LCD_CMD_SWRESET: Software reset.

LCD_CMD_SLPIN: Sleep in.

LCD_CMD_SLPOUT: Sleep out.

LCD_CMD_PTLON: Partial display mode on.

LCD_CMD_NORON: Normal display mode on.

LCD_CMD_INVOFF: Display inversion off.

LCD_CMD_INVON: Display inversion on.

LCD_CMD_GAMSET: Gamma set.

LCD_CMD_DISPOFF: Display off.

LCD_CMD_DISPON: Display on.

LCD_CMD_CASET: Column address set.

LCD_CMD_RASET: Row address set.

LCD_CMD_RAMWR: Memory write.

LCD_CMD_PTLAR: Partial area.

LCD_CMD_VSCRDEF: Vertical scrolling definition.

LCD_CMD_TEOFF: Tearing effect line off.

LCD_CMD_TEON: Tearing effect line on.

LCD_CMD_MADCTL: Memory data access control.

LCD_CMD_VSCSAD: Vertical scroll start address of RAM.

LCD_CMD_IDMOFF: Idle mode off.

LCD_CMD_IDMON: Idle mode on.

LCD_CMD_COLMOD: Interface pixel format.

LCD_CMD_RAMWRC: Write memory continue.

LCD_CMD_STE: Set tear scanline.

LCD_CMD_RAMCTRL: RAM control.

LCD_CMD_RGBCTRL: RGB interface control.

LCD_VBP_DEFAULT: TI-OS default for parameter byte 2 of LCD_CMD_RGBCTRL (defined as 5)

LCD_HBP_DEFAULT: TI-OS default for parameter byte 3 of LCD_CMD_RGBCTRL (defined as 20)

LCD_CMD_PORCTRL: Porch setting.

LCD_BP_DEFAULT: TI-OS default back porch for LCD_CMD_PORCTRL parameters (defined as 12)

LCD_FP_DEFAULT: TI-OS default front porch for LCD_CMD_PORCTRL parameters (defined as 12)

LCD_CMD_FRCTRL1: Frame rate control 1 (in partial mode/idle colors)

LCD_CMD_PARCTRL: Partial control.

LCD_CMD_GTADJ: Gate on timing adjustment.

LCD_CMD_DGMEN: Digital gamma enable.

LCD_CMD_POWSAVE: Power saving mode.

LCD_CMD_DLPOFFSAVE: Display off power save.

LCD_CMD_LCMCTRL: LCM control.

LCD_CMD_IDSET: ID code setting.

LCD_CMD_VCMOFSET: VCOM offset set.

LCD_CMD_FRCTRL2: Frame rate control in normal mode.

LCD_CMD_PVGAMCTRL: Positive voltage gamma control.

LCD_CMD_NVGAMCTRL: Negative voltage gamma control.

LCD_CMD_DGMLUTR: Digital gamma lookup table for red.

LCD_CMD_DGMLUTB: Digital gamma lookup table for blue.

LCD_CMD_GATECTRL: Gate control.

LCD_CMD_EQCTRL: Equalize time control.

Typedefs

typedef enum lcd_gamset lcd_gamset_t: Parameter values for LCD_CMD_GAMSET.

typedef enum lcd_madctl lcd_madctl_t

Parameter flags for LCD_CMD_MADCTL.

See also

lcd_SetRamAccessOrder()

typedef enum lcd_pxlfmt lcd_pxlfmt_t: Pixel format field values.

typedef enum lcd_colmod lcd_colmod_t

Parameter fields for LCD_CMD_COLMOD.

See also

lcd_SetPixelFormat()

typedef enum lcd_ramctrl1 lcd_ramctrl1_t

Fields for parameter byte 1 of LCD_CMD_RAMCTRL.

See also

lcd_SetRamInterface()

typedef enum lcd_ramctrl2 lcd_ramctrl2_t

Fields for parameter byte 2 of LCD_CMD_RAMCTRL.

See also

lcd_SetRamControl()

typedef enum lcd_rgbctrl lcd_rgbctrl_t: Flags and fields for parameter byte 1 of LCD_CMD_RGBCTRL.

typedef enum lcd_porctrl lcd_porctrl_t

Values for parameter byte 3 of LCD_CMD_PORCTRL.

See also

lcd_EnableSeparatePorchControl()

typedef enum lcd_frctrl1 lcd_frctrl1_t

Fields for parameter byte 1 of LCD_CMD_FRCTRL1.

See also

lcd_SetFrameRateDivider()

typedef enum lcd_parctrl lcd_parctrl_t

Parameter fields for LCD_CMD_PARCTRL.

See also

lcd_SetPartialControl()

typedef enum lcd_dgmen lcd_dgmen_t

Parameter values for LCD_CMD_DGMEN.

See also

lcd_SetDigitalGamma()

typedef enum lcd_lcmctrl lcd_lcmctrl_t

Parameter flags for LCD_CMD_LCMCTRL.

See also

lcd_SetInvertedSettings()

typedef enum lcd_frctrl lcd_frctrl_t

Parameter fields for LCD_CMD_FRCTRL2 and parameter bytes 2 and 3 of LCD_CMD_FRCTRL1.

See also

lcd_SetNormalFrameRateControl()

typedef enum lcd_gatectrl_nl lcd_gatectrl_nl_t: Values for parameter byte 1 of LCD_CMD_GATECTRL.

typedef enum lcd_gatectrl_scn lcd_gatectrl_scn_t: Values for parameter byte 2 of LCD_CMD_GATECTRL.

typedef enum lcd_gatectrl lcd_gatectrl_t

Values for parameter byte 3 of LCD_CMD_GATECTRL.

See also

lcd_SetGateControl()

Enums

enum lcd_gamset

Parameter values for LCD_CMD_GAMSET.

Values:

enumerator LCD_GAM_2_2 = 1: Gamma 2.2.

enumerator LCD_GAM_1_8 = 2: Gamma 1.8.

enumerator LCD_GAM_2_5 = 4: Gamma 2.5.

enumerator LCD_GAM_1_0 = 8: Gamma 1.0.

enum lcd_madctl

Parameter flags for LCD_CMD_MADCTL.

See also

lcd_SetRamAccessOrder()

Values:

enumerator LCD_MH = 1 << 2: Display data latch order (scan from bottom to top)

enumerator LCD_BGR = 1 << 3: BGR order (swap red and blue)

enumerator LCD_ML = 1 << 4: Line address order (scan from right to left)

enumerator LCD_MV = 1 << 5: Page/column order (RAM access is column major)

enumerator LCD_MX = 1 << 6: Column address order (RAM access from bottom to top)

enumerator LCD_MY = 1 << 7: Page address order (RAM access from right to left)

enumerator LCD_MADCTL_DEFAULT = LCD_BGR : TI-OS default parameters.

enum lcd_pxlfmt

Pixel format field values.

Values:

enumerator LCD_PXLFMT_12BPP = 3: 12 bits per pixel (SPI only)

enumerator LCD_PXLFMT_16BPP = 5: 16 bits per pixel

enumerator LCD_PXLFMT_18BPP = 6: 18 bits per pixel

enumerator LCD_PXLFMT_MASK = 7: Bitmask for PXLFMT field.

enum lcd_colmod

Parameter fields for LCD_CMD_COLMOD.

See also

lcd_SetPixelFormat()

Values:

enumerator LCD_SPI_12BPP = LCD_PXLFMT_12BPP << 0: 12 bits per pixel over SPI interface

enumerator LCD_SPI_16BPP = LCD_PXLFMT_16BPP << 0: 16 bits per pixel over SPI interface

enumerator LCD_SPI_18BPP = LCD_PXLFMT_18BPP << 0: 18 bits per pixel over SPI interface

enumerator LCD_RGB_16BPP = LCD_PXLFMT_16BPP << 4: 16 bits per pixel over RGB interface

enumerator LCD_RGB_18BPP = LCD_PXLFMT_18BPP << 4: 18 bits per pixel over RGB interface

enumerator LCD_SPI_MASK = LCD_PXLFMT_MASK << 0: Bitmask for SPI field.

enumerator LCD_RGB_MASK = LCD_PXLFMT_MASK << 4: Bitmask for RGB field.

enumerator LCD_SPI_DEFAULT = LCD_SPI_18BPP : TI-OS default SPI bits per pixel.

enumerator LCD_RGB_DEFAULT = LCD_RGB_18BPP : TI-OS default RGB bits per pixel.

enumerator LCD_COLMOD_DEFAULT = LCD_SPI_DEFAULT | LCD_RGB_DEFAULT : TI-OS default parameters.

enum lcd_ramctrl1

Fields for parameter byte 1 of LCD_CMD_RAMCTRL.

See also

lcd_SetRamInterface()

Values:

enumerator LCD_DM_MCU = 0 << 0: MCU display mode (internal timing)

enumerator LCD_DM_RGB = 1 << 0: RGB display mode (RGB interface timing)

enumerator LCD_DM_VSYNC = 2 << 0: VSYNC display mode (internal timing except for RGB interface VSYNC)

enumerator LCD_RAM_SPI = 0 << 4: RAM access over SPI interface.

enumerator LCD_RAM_RGB = 1 << 4: RAM access over RGB interface.

enumerator LCD_DM_MASK = 3 << 0: Bitmask for DM field.

enumerator LCD_RAM_MASK = 1 << 4: Bitmask for RAM field.

enumerator LCD_DM_DEFAULT = LCD_DM_RGB : TI-OS default display mode.

enumerator LCD_RAM_DEFAULT = LCD_RAM_RGB : TI-OS default RAM access.

enumerator LCD_RAMCTRL1_DEFAULT = LCD_DM_DEFAULT | LCD_RAM_DEFAULT : TI-OS default parameters.

enum lcd_ramctrl2

Fields for parameter byte 2 of LCD_CMD_RAMCTRL.

See also

lcd_SetRamControl()

Values:

enumerator LCD_BUS_18BIT = 0 << 2: 18-bit bus for RGB interface (use this on the CE)

enumerator LCD_BUS_6BIT = 1 << 2: 6-bit bus for RGB interface (not used on the CE)

enumerator LCD_ENDIAN_BIG = 0 << 3: Big endian order for 16-bit pixels sent over SPI.

enumerator LCD_ENDIAN_LITTLE = 1 << 3: Little endian order for 16-bit pixels sent over SPI.

enumerator LCD_EPF_0 = 0 << 4: Expanded pixel format where component LSBs are set to 0.

enumerator LCD_EPF_1 = 1 << 4: Expanded pixel format where component LSBs are set to 1.

enumerator LCD_EPF_MSB = 2 << 4: Expanded pixel format where component LSBs are copied from the MSBs.

enumerator LCD_EPF_GREEN = 3 << 4: Expanded pixel format where component LSBs are copied from green LSB.

enumerator LCD_WEMODE_SPI_STOP = 0 << 6: Stop-at-end mode for SPI interface; after writing the last row and column, ignore further pixels.

enumerator LCD_WEMODE_SPI_WRAP = 1 << 6: Wrap-at-end mode for SPI interface; after writing the last row and column, wrap to the start.

enumerator LCD_WEMODE_RGB_WRAP = 0 << 7: Wrap-at-end mode for RGB interface; after writing the last row and column, wrap to the start.

enumerator LCD_WEMODE_RGB_STOP = 1 << 7: Stop-at-end mode for RGB interface; after writing the last row and column, ignore further pixels.

enumerator LCD_BUS_MASK = 1 << 2: Bitmask for BUS field.

enumerator LCD_ENDIAN_MASK = 1 << 3: Bitmask for ENDIAN field.

enumerator LCD_EPF_MASK = 3 << 4: Bitmask for EPF field.

enumerator LCD_WEMODE_SPI_MASK = 1 << 6: Bitmask for WEMODE_SPI field.

enumerator LCD_WEMODE_RGB_MASK = 1 << 7: Bitmask for WEMODE_RGB field.

enumerator LCD_BUS_DEFAULT = LCD_BUS_18BIT : TI-OS default RGB interface bus width.

enumerator LCD_ENDIAN_DEFAULT = LCD_ENDIAN_BIG : TI-OS default endian order for 16-bit pixels sent over SPI.

enumerator LCD_EPF_DEFAULT = LCD_EPF_GREEN : TI-OS default expanded pixel format.

enumerator LCD_WEMODE_SPI_DEFAULT = LCD_WEMODE_SPI_WRAP : TI-OS default wrap-at-end mode for SPI interface.

enumerator LCD_WEMODE_RGB_DEFAULT = LCD_WEMODE_RGB_STOP : TI-OS default wrap-at-end mode for RGB interface.

enumerator LCD_RAMCTRL2_DEFAULT = LCD_BUS_DEFAULT | LCD_ENDIAN_DEFAULT | LCD_EPF_DEFAULT | LCD_WEMODE_SPI_DEFAULT | LCD_WEMODE_RGB_DEFAULT : TI-OS default parameters.

enum lcd_rgbctrl

Flags and fields for parameter byte 1 of LCD_CMD_RGBCTRL.

Values:

enumerator LCD_EPL = 1 << 0: ENABLE signal polarity for RGB interface (set for low)

enumerator LCD_DPL = 1 << 1: DOTCLK signal polarity for RGB interface (set for falling edge)

enumerator LCD_HSPL = 1 << 2: HSYNC signal polarity for RGB interface (set for high active)

enumerator LCD_VSPL = 1 << 3: VSYNC signal polarity for RGB interface (set for high active)

enumerator LCD_RCM_DE = 2 << 5: Set RGB DE (Data Enable) mode.

enumerator LCD_RCM_HV = 3 << 5: Set RGB HV (HSYNC/VSYNC) mode.

enumerator LCD_WO = 1 << 7: Enable direct RGB mode, bypassing RAM.

enumerator LCD_RCM_MASK = 3 << 5: Mask for RCM field.

enumerator LCD_RCM_DEFAULT = 0 << 5: TI-OS default RGB control mode (functionally equivalent to LCD_RCM_DE)

enumerator LCD_RGBCTRL_DEFAULT = LCD_RCM_DEFAULT | LCD_EPL : TI-OS default parameters.

enum lcd_porctrl

Values for parameter byte 3 of LCD_CMD_PORCTRL.

See also

lcd_EnableSeparatePorchControl()

Values:

enumerator LCD_PS_DISABLE = 0: Disable separate porch control.

enumerator LCD_PS_ENABLE = 1: Enable separate porch control.

enumerator LCD_PS_DEFAULT = LCD_PS_DISABLE : TI-OS default parameter.

enum lcd_frctrl1

Fields for parameter byte 1 of LCD_CMD_FRCTRL1.

See also

lcd_SetFrameRateDivider()

Values:

enumerator LCD_DIV_1 = 0 << 0: Divide LCD internal pixel clock rate by 1 (10 MHz)

enumerator LCD_DIV_2 = 1 << 0: Divide LCD internal pixel clock rate by 2 (5 MHz)

enumerator LCD_DIV_4 = 2 << 0: Divide LCD internal pixel clock rate by 4 (2.5 MHz)

enumerator LCD_DIV_8 = 3 << 0: Divide LCD internal pixel clock rate by 8 (1.25 MHz)

enumerator LCD_FRS_DISABLE = 0 << 4: Disable separate frame rate control for Idle Mode and Partial Mode.

enumerator LCD_FRS_ENABLE = 1 << 4: Enable separate frame rate control for Idle Mode and Partial Mode.

enumerator LCD_DIV_MASK = 3 << 0: Bitmask for DIV field.

enumerator LCD_FRS_MASK = 1 << 4: Bitmask for FRS field.

enumerator LCD_DIV_DEFAULT = LCD_DIV_1 : TI-OS default pixel clock divider.

enumerator LCD_FRS_DEFAULT = LCD_FRS_DISABLE : TI-OS default separate frame rate control setting.

enumerator LCD_FRCTRL1_DEFAULT = LCD_DIV_DEFAULT | LCD_FRS_DEFAULT : TI-OS default parameters.

enum lcd_parctrl

Parameter fields for LCD_CMD_PARCTRL.

See also

lcd_SetPartialControl()

Values:

enumerator LCD_ISC_NONE = 0 << 0: Interval scan mode disabled.

enumerator LCD_ISC_1 = 16 << 0: Non-display area is scanned every frame.

enumerator LCD_ISC_3 = 17 << 0: Non-display area is scanned every 3 frames.

enumerator LCD_ISC_5 = 18 << 0: Non-display area is scanned every 5 frames.

enumerator LCD_ISC_7 = 19 << 0: Non-display area is scanned every 7 frames.

enumerator LCD_ISC_9 = 20 << 0: Non-display area is scanned every 9 frames.

enumerator LCD_ISC_11 = 21 << 0: Non-display area is scanned every 11 frames.

enumerator LCD_ISC_13 = 22 << 0: Non-display area is scanned every 13 frames.

enumerator LCD_ISC_15 = 23 << 0: Non-display area is scanned every 15 frames.

enumerator LCD_ISC_17 = 24 << 0: Non-display area is scanned every 17 frames.

enumerator LCD_ISC_19 = 25 << 0: Non-display area is scanned every 19 frames.

enumerator LCD_ISC_21 = 26 << 0: Non-display area is scanned every 21 frames.

enumerator LCD_ISC_23 = 27 << 0: Non-display area is scanned every 23 frames.

enumerator LCD_ISC_25 = 28 << 0: Non-display area is scanned every 25 frames.

enumerator LCD_ISC_27 = 29 << 0: Non-display area is scanned every 27 frames.

enumerator LCD_ISC_29 = 30 << 0: Non-display area is scanned every 29 frames.

enumerator LCD_ISC_31 = 31 << 0: Non-display area is scanned every 31 frames.

enumerator LCD_NDL_WHITE = 0 << 7: Non-display area is displayed as white.

enumerator LCD_NDL_BLACK = 1 << 7: Non-display area is displayed as black.

enumerator LCD_ISC_MASK = 31 << 0: Bitmask for ISC field.

enumerator LCD_NDL_MASK = 1 << 7: Bitmask for NDL field.

enumerator LCD_ISC_DEFAULT = LCD_ISC_NONE : TI-OS default interval scan cycle setting.

enumerator LCD_NDL_DEFAULT = LCD_NDL_WHITE : TI-OS default non-display level setting.

enumerator LCD_PARCTRL_DEFAULT = LCD_ISC_DEFAULT | LCD_NDL_DEFAULT : TI-OS default parameters.

enum lcd_dgmen

Parameter values for LCD_CMD_DGMEN.

See also

lcd_SetDigitalGamma()

Values:

enumerator LCD_DGM_DISABLE = 0 << 2: Disable digital gamma.

enumerator LCD_DGM_ENABLE = 1 << 2: Enable digital gamma.

enumerator LCD_DGM_DEFAULT = LCD_DGM_DISABLE : TI-OS default digital gamma setting.

enum lcd_lcmctrl

Parameter flags for LCD_CMD_LCMCTRL.

See also

lcd_SetInvertedSettings()

Values:

enumerator LCD_XGS = 1 << 0

Set to invert the effect of LCD_GS.

See also

lcd_SetGateControl()

enumerator LCD_XMV = 1 << 1

Set to invert the effect of LCD_MV.

See also

lcd_SetRamAccessOrder()

enumerator LCD_XMH = 1 << 2

Set to invert the effect of LCD_MH.

See also

lcd_SetRamAccessOrder()

enumerator LCD_XMX = 1 << 3

Set to invert the effect of LCD_MX.

See also

lcd_SetRamAccessOrder()

enumerator LCD_XINV = 1 << 4

Set to invert the effect of LCD_CMD_INVOFF and LCD_CMD_INVON.

See also

lcd_SetInvertedMode()

enumerator LCD_XBGR = 1 << 5

Set to invert the effect of LCD_BGR.

See also

lcd_SetRamAccessOrder()

enumerator LCD_XMY = 1 << 6

Set to invert the effect of LCD_MY.

See also

lcd_SetRamAccessOrder()

enumerator LCD_LCMCTRL_DEFAULT = LCD_XMV | LCD_XBGR : TI-OS default parameters.

enum lcd_frctrl

Parameter fields for LCD_CMD_FRCTRL2 and parameter bytes 2 and 3 of LCD_CMD_FRCTRL1.

See also

lcd_SetNormalFrameRateControl()

Values:

enumerator LCD_RTN_250 = 0 << 0

250 pixel clocks per line (119 Hz with default porches).

Should not be used or internal RAM reads will fail.

enumerator LCD_RTN_266 = 1 << 0: 266 pixel clocks per line (111 Hz with default porches)

enumerator LCD_RTN_282 = 2 << 0: 282 pixel clocks per line (105 Hz with default porches)

enumerator LCD_RTN_298 = 3 << 0: 282 pixel clocks per line (99 Hz with default porches)

enumerator LCD_RTN_314 = 4 << 0: 314 pixel clocks per line (94 Hz with default porches)

enumerator LCD_RTN_330 = 5 << 0: 330 pixel clocks per line (90 Hz with default porches)

enumerator LCD_RTN_346 = 6 << 0: 346 pixel clocks per line (86 Hz with default porches)

enumerator LCD_RTN_362 = 7 << 0: 362 pixel clocks per line (82 Hz with default porches)

enumerator LCD_RTN_378 = 8 << 0: 378 pixel clocks per line (78 Hz with default porches)

enumerator LCD_RTN_394 = 9 << 0: 394 pixel clocks per line (75 Hz with default porches)

enumerator LCD_RTN_410 = 10 << 0: 410 pixel clocks per line (72 Hz with default porches)

enumerator LCD_RTN_426 = 11 << 0: 426 pixel clocks per line (69 Hz with default porches)

enumerator LCD_RTN_442 = 12 << 0: 442 pixel clocks per line (67 Hz with default porches)

enumerator LCD_RTN_458 = 13 << 0: 458 pixel clocks per line (64 Hz with default porches)

enumerator LCD_RTN_474 = 14 << 0: 474 pixel clocks per line (62 Hz with default porches)

enumerator LCD_RTN_490 = 15 << 0: 490 pixel clocks per line (60 Hz with default porches)

enumerator LCD_RTN_506 = 16 << 0: 506 pixel clocks per line (58 Hz with default porches)

enumerator LCD_RTN_522 = 17 << 0: 522 pixel clocks per line (57 Hz with default porches)

enumerator LCD_RTN_538 = 18 << 0: 538 pixel clocks per line (55 Hz with default porches)

enumerator LCD_RTN_554 = 19 << 0: 554 pixel clocks per line (53 Hz with default porches)

enumerator LCD_RTN_570 = 20 << 0: 570 pixel clocks per line (52 Hz with default porches)

enumerator LCD_RTN_586 = 21 << 0: 586 pixel clocks per line (50 Hz with default porches)

enumerator LCD_RTN_602 = 22 << 0: 602 pixel clocks per line (49 Hz with default porches)

enumerator LCD_RTN_618 = 23 << 0: 618 pixel clocks per line (48 Hz with default porches)

enumerator LCD_RTN_634 = 24 << 0: 634 pixel clocks per line (46 Hz with default porches)

enumerator LCD_RTN_650 = 25 << 0: 650 pixel clocks per line (45 Hz with default porches)

enumerator LCD_RTN_666 = 26 << 0: 666 pixel clocks per line (44 Hz with default porches)

enumerator LCD_RTN_682 = 27 << 0: 682 pixel clocks per line (43 Hz with default porches)

enumerator LCD_RTN_698 = 28 << 0: 698 pixel clocks per line (42 Hz with default porches)

enumerator LCD_RTN_714 = 29 << 0: 714 pixel clocks per line (41 Hz with default porches)

enumerator LCD_RTN_730 = 30 << 0: 730 pixel clocks per line (40 Hz with default porches)

enumerator LCD_RTN_746 = 31 << 0: 746 pixel clocks per line (39 Hz with default porches)

enumerator LCD_NL_DOT = 0 << 5: Dot-based polarity inversion.

enumerator LCD_NL_COLUMN = 7 << 5: Column-based polarity inversion.

enumerator LCD_RTN_MASK = 31 << 0: Bitmask for RTN field.

enumerator LCD_NL_MASK = 7 << 5: Bitmask for NL field.

enumerator LCD_RTN_DEFAULT = LCD_RTN_490 : TI-OS default pixel clocks per line.

enumerator LCD_NL_DEFAULT = LCD_NL_DOT : TI-OS default polarity inversion mode.

enumerator LCD_FRCTRL_DEFAULT = LCD_RTN_DEFAULT | LCD_NL_DEFAULT : TI-OS default parameters.

enum lcd_gatectrl_nl

Values for parameter byte 1 of LCD_CMD_GATECTRL.

Values:

enumerator LCD_GC_NL_8 = 0: 8 physical lines in the display

enumerator LCD_GC_NL_16 = 1: 16 physical lines in the display

enumerator LCD_GC_NL_24 = 2: 24 physical lines in the display

enumerator LCD_GC_NL_32 = 3: 32 physical lines in the display

enumerator LCD_GC_NL_40 = 4: 40 physical lines in the display

enumerator LCD_GC_NL_48 = 5: 48 physical lines in the display

enumerator LCD_GC_NL_56 = 6: 56 physical lines in the display

enumerator LCD_GC_NL_64 = 7: 64 physical lines in the display

enumerator LCD_GC_NL_72 = 8: 72 physical lines in the display

enumerator LCD_GC_NL_80 = 9: 80 physical lines in the display

enumerator LCD_GC_NL_88 = 10: 88 physical lines in the display

enumerator LCD_GC_NL_96 = 11: 96 physical lines in the display

enumerator LCD_GC_NL_104 = 12: 104 physical lines in the display

enumerator LCD_GC_NL_112 = 13: 112 physical lines in the display

enumerator LCD_GC_NL_120 = 14: 120 physical lines in the display

enumerator LCD_GC_NL_128 = 15: 128 physical lines in the display

enumerator LCD_GC_NL_136 = 16: 136 physical lines in the display

enumerator LCD_GC_NL_144 = 17: 144 physical lines in the display

enumerator LCD_GC_NL_152 = 18: 152 physical lines in the display

enumerator LCD_GC_NL_160 = 19: 160 physical lines in the display

enumerator LCD_GC_NL_168 = 20: 168 physical lines in the display

enumerator LCD_GC_NL_176 = 21: 176 physical lines in the display

enumerator LCD_GC_NL_184 = 22: 184 physical lines in the display

enumerator LCD_GC_NL_192 = 23: 192 physical lines in the display

enumerator LCD_GC_NL_200 = 24: 200 physical lines in the display

enumerator LCD_GC_NL_208 = 25: 208 physical lines in the display

enumerator LCD_GC_NL_216 = 26: 216 physical lines in the display

enumerator LCD_GC_NL_224 = 27: 224 physical lines in the display

enumerator LCD_GC_NL_232 = 28: 232 physical lines in the display

enumerator LCD_GC_NL_240 = 29: 240 physical lines in the display

enumerator LCD_GC_NL_248 = 30: 248 physical lines in the display

enumerator LCD_GC_NL_256 = 31: 256 physical lines in the display

enumerator LCD_GC_NL_264 = 32: 264 physical lines in the display

enumerator LCD_GC_NL_272 = 33: 272 physical lines in the display

enumerator LCD_GC_NL_280 = 34: 280 physical lines in the display

enumerator LCD_GC_NL_288 = 35: 288 physical lines in the display

enumerator LCD_GC_NL_296 = 36: 296 physical lines in the display

enumerator LCD_GC_NL_304 = 37: 304 physical lines in the display

enumerator LCD_GC_NL_312 = 38: 312 physical lines in the display

enumerator LCD_GC_NL_320 = 39: 320 physical lines in the display

enumerator LCD_GC_NL_DEFAULT = LCD_GC_NL_320 : TI-OS default parameter.

enum lcd_gatectrl_scn

Values for parameter byte 2 of LCD_CMD_GATECTRL.

Values:

enumerator LCD_GC_SCN_0 = 0: Display starts at gate 0

enumerator LCD_GC_SCN_8 = 1: Display starts at gate 8

enumerator LCD_GC_SCN_16 = 2: Display starts at gate 16

enumerator LCD_GC_SCN_24 = 3: Display starts at gate 24

enumerator LCD_GC_SCN_32 = 4: Display starts at gate 32

enumerator LCD_GC_SCN_40 = 5: Display starts at gate 40

enumerator LCD_GC_SCN_48 = 6: Display starts at gate 48

enumerator LCD_GC_SCN_56 = 7: Display starts at gate 56

enumerator LCD_GC_SCN_64 = 8: Display starts at gate 64

enumerator LCD_GC_SCN_72 = 9: Display starts at gate 72

enumerator LCD_GC_SCN_80 = 10: Display starts at gate 80

enumerator LCD_GC_SCN_88 = 11: Display starts at gate 88

enumerator LCD_GC_SCN_96 = 12: Display starts at gate 96

enumerator LCD_GC_SCN_104 = 13: Display starts at gate 104.

enumerator LCD_GC_SCN_112 = 14: Display starts at gate 112.

enumerator LCD_GC_SCN_120 = 15: Display starts at gate 120.

enumerator LCD_GC_SCN_128 = 16: Display starts at gate 128.

enumerator LCD_GC_SCN_136 = 17: Display starts at gate 136.

enumerator LCD_GC_SCN_144 = 18: Display starts at gate 144.

enumerator LCD_GC_SCN_152 = 19: Display starts at gate 152.

enumerator LCD_GC_SCN_160 = 20: Display starts at gate 160.

enumerator LCD_GC_SCN_168 = 21: Display starts at gate 168.

enumerator LCD_GC_SCN_176 = 22: Display starts at gate 176.

enumerator LCD_GC_SCN_184 = 23: Display starts at gate 184.

enumerator LCD_GC_SCN_192 = 24: Display starts at gate 192.

enumerator LCD_GC_SCN_200 = 25: Display starts at gate 200.

enumerator LCD_GC_SCN_208 = 26: Display starts at gate 208.

enumerator LCD_GC_SCN_216 = 27: Display starts at gate 216.

enumerator LCD_GC_SCN_224 = 28: Display starts at gate 224.

enumerator LCD_GC_SCN_232 = 29: Display starts at gate 232.

enumerator LCD_GC_SCN_240 = 30: Display starts at gate 240.

enumerator LCD_GC_SCN_248 = 31: Display starts at gate 248.

enumerator LCD_GC_SCN_256 = 32: Display starts at gate 256.

enumerator LCD_GC_SCN_264 = 33: Display starts at gate 264.

enumerator LCD_GC_SCN_272 = 34: Display starts at gate 272.

enumerator LCD_GC_SCN_280 = 35: Display starts at gate 280.

enumerator LCD_GC_SCN_288 = 36: Display starts at gate 288.

enumerator LCD_GC_SCN_296 = 37: Display starts at gate 296.

enumerator LCD_GC_SCN_304 = 38: Display starts at gate 304.

enumerator LCD_GC_SCN_312 = 39: Display starts at gate 312.

enumerator LCD_GC_SCN_DEFAULT = LCD_GC_SCN_0 : TI-OS default parameter.

enum lcd_gatectrl

Values for parameter byte 3 of LCD_CMD_GATECTRL.

See also

lcd_SetGateControl()

Values:

enumerator LCD_GS = 1 << 0: Gate scan direction (scan from right to left)

enumerator LCD_SS = 1 << 1: Source scan direction (scan from bottom to top)

enumerator LCD_SM = 1 << 2

Interlaced scan mode.

See also

lcd_SetInterlacedMode()

enumerator LCD_TMG = 1 << 4: Gate mirror selection (local mirror for displays with fewer than 320 lines)

enumerator LCD_GATECTRL_DEFAULT = LCD_TMG : TI-OS default parameters.

Functions

void lcd_Init(void)

Initializes the LCD driver.

The first call to this function will reinitialize the SPI controller to target the LCD and prepare the SPI controller to send data.

Note

This must be called before any other function. Each call to this function must correspond to a call to lcd_Cleanup().

void lcd_Wait(void): Waits for all previously queued commands and parameters to finish sending.

void lcd_Cleanup(void)

Uninitializes the LCD driver.

The last call to this function, corresponding to the first call to lcd_Init(), will disable the SPI controller. Implicitly calls lcd_Wait() in case there are commands in progress.

Note

This will not restore any changed LCD settings. If that is necessary, send commands to change them back to defaults.

const void *lcd_SendSizedCommandRaw(uint16_t sized_cmd, const void *params)

Sends a command, given a pointer to its raw parameters.

You can also use the lcd_SendCommandRaw() convenience macro to specify the command and the size of the parameters separately.

Parameters

sized_cmd – [in] An LCD_SIZEDCMD literal, specifying parameter data size in bytes
params – [in] Pointer to raw parameter data

Returns

Pointer following raw parameter data

const void *lcd_SendParamsRaw(size_t size, const void *params)

Sends only raw parameters to a previously sent command.

Most useful for sending pixel data after lcd_StartPixelWrite() or lcd_ContinuePixelWrite().

Parameters

size – [in] Size of the raw parameters in bytes
params – [in] Pointer to raw parameter data

Returns

Pointer following the raw parameter data.

void lcd_SendCommand(uint8_t cmd): Sends a command with no parameters.

void lcd_SendCommand1(uint8_t cmd, uint8_t param): Sends a command with one byte parameter.

void lcd_SendCommand2(uint8_t cmd, uint8_t param1, uint8_t param2): Sends a command with two byte parameters.

void lcd_SendSizedCommandBytes(uint16_t sized_cmd, ...)

Sends a command with an arbitrary number of byte parameters.

You can also use the lcd_SendCommandBytes() convenience macro to specify the command and the number of parameters separately.

Parameters

sized_cmd – [in] An LCD_SIZEDCMD literal, specifying number of bytes
... – [in] One function parameter for each byte parameter

void lcd_SendSizedCommandWords(uint16_t sized_cmd, ...)

Sends a command with an arbitrary number of 16-bit word parameters.

The parameters should be passed as their actual values, and are converted to big endian when transferred over SPI.

You can also use the lcd_SendCommandWords() convenience macro to specify the command and the number of parameters separately.

Parameters

sized_cmd – [in] An LCD_SIZEDCMD literal, specifying number of words
... – [in] One function parameter for each word parameter

void lcd_SetUniformGamma(void)

Sets a gamma profile that provides a uniform perceived change in brightness as the color components change.

This fixes a flaw in TI’s default gamma profile that makes some darker colors indistinguishable.

void lcd_SetDefaultGamma(void): Restores TI’s default gamma profile.

lcddrvce.h

Overview

Library Initialization

API Documentation

Overview 

Library Initialization 

API Documentation 